1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd8f0fb7f10b745cbdaa16bc534babc5ce061b3227506328c281c114de9cf1c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9ca4f571-1f90-4618-bf22-3d4c35d8634b.json and https://artists.proofprofile.net/proofs/artist/9ca4f571-1f90-4618-bf22-3d4c35d8634b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Armenia - Mer Hayrenik - Armenian National Anthem ( Our Fatherland )
Australia - Advance Australia Fair - Australian National Anthem
Japan - Kimigayo - Japanese National Anthem ( His Imperial Majesty's Reign )
Saudi Arabia - Aash Al Maleek - Saudi National Anthem ( Hasten )
Argentina - Himno Nacional Argentino - Oíd, Mortales! - Argentine National Anthem ( Patriotic March )
Ukraine - Šče Ne Vmerla Ukraïny - Ukrainian National Anthem ( The Glory and the Freedom of Ukraine Has Not Yet Died )
USA - United States of America - The Star-Spangled Banner - American National Anthem
Egypt - Bilādī - Egyptian National Anthem ( My Homeland )
Croatia - Lijepa Naša Domovino - Croatian National Anthem ( Our Beautiful Homeland )
Costa Rica - Himno Nacional de Costa Rica - Noble Patria, Tu Hermosa Bandera - Costa Rican National Anthem ( Costa Rican National Anthem - Noble Homeland, your Beautiful Flag )
Venezuela - Gloria al Bravo Pueblo - Venezuelan National Anthem ( Glory to the Brave People )
UK - United Kingdom of Great Britain and Northern Ireland - God Save the Queen - God Save the King - English National Anthem
Mexico - Himno Nacional Mexicano - Mexicanos, Al Grito De Guerra ( Mexican National Anthem - Mexicans, At the Call of War )
Indonesia - Indonesia Raya - Indonesian National Anthem ( Indonesia the Great )
Chile - Himno Nacional de Chile - Canción Nacional de Chile - Chilean National Anthem ( National Anthem of Chile - National Song )
Cameroon - Chant de Ralliement - Ô Cameroun, berceau de nos ancêtres - Cameroonian National Anthem ( The Rallying Song )
Tunisia - Humat Al-Hima - Tunisian National Anthem ( Defenders of the Homeland )
Philippines - Lupang Hinirang - Bayang Magiliw - Filipino National Anthem ( Chosen Land )
Ireland - Amhrán Na bhFiann - Irish National Anthem ( The Soldier's Song )
Romania - Deşteaptă-te, Române! - Romanian National Anthem ( Awaken Thee, Romanian! )
Hungary - Himnusz - Isten, Áldd Meg a Magyart - Hungarian National Anthem ( God, Bless the Hungarians )
Greece - Imnos Is Tin Eleftherian - Greek National Anthem ( Hymn to Liberty - Hymn to Freedom )
Libya - Allahu Akbar - Libyan National Anthem ( Allah Is the Greatest )
Vatican city - Inno e marcia pontificale - Vatican National Anthem ( Pontifical Anthem and March )
Poland - Mazurek Dąbrowskiego - Pieśń Legionów Polskich we Włoszech - Polish National Anthem ( Dąbrowski's Mazurka - Song of the Polish Legions in Italy )
Paraguay - Paraguayos República o Muerte - Paraguayan National Anthem ( Paraguayans, Republic or Death )
Nigeria - Arise O Compatriots, Nigeria's Call Obey - Nigerian National Anthem
Jamaica - Jamaica, Lande We Love - Jamaican National Anthem
Brazil - Hino Nacional Brasileiro - Brazilian National Anthem
Austria - Land der Berge, Land am Strome - Austrian National Anthem ( Land of Mountains, Land By the River )
Thailand - Phleng Chat - Thai National Anthem
Israel - Hatikvah - Israeli National Anthem ( The Hope )
Colombia - Himno Nacional de la Rebublica de Colombia - Colombian National Anthem ( National Anthem of the Republic of Colombia )
Canada - Ô Canada - Canadian National Anthem ( O Canada )
Norway - Ja, Vi Elsker Dette Landet - Norwegian National Anthem ( Yes, we Love This Country - Song For Norway )
Bulgaria - Mila Rodino - Bulgarian National Anthem ( Dear Motherland )
Senegal - Le lion rouge - Princes tous vos koras, frappez les balafons - Senegalese National Anthem ( The Red Lion - Everyone Strum your Koras, Strike the Balafons )
Portugal - A Portuguesa - Portuguese National Anthem ( The Portuguese )
Ecuador - Salve, Oh Patria - Ecuadorian National Anthem ( We Salute You, Our Homeland )
Bolivia - Bolivianos, El Hado Propicio - Bolivian National Anthem ( Bolivians, a Most Favorable Destiny )
Switwerland - Schweizer Psalm - Swiss National Anthem ( Swiss Psalm )
Slovakia - Nad Tatrou Sa Blýska - Slovak National Anthem ( Lightning Over the Tatras )
Netherlands - Wilhelmus Van Nassouwe - Dutch National Anthem ( William )
Kenya - Ee Mungu Nguvu Yetu - Kenyan National Anthem ( O God, Of All Creation )
Italy - Inno di Mameli - Fratelli d'Italia - Italian National Anthem ( Mameli's Hymn - Brothers of Italy )
Finland - Maamme - Finnish National Anthem ( Our Land )
India - Jana Gana Mana - Indian National Anthem ( Thou Art the Ruler of the Minds of All People )
URSS - Russian Federation - Gimn Rossijskoi Federazii - Russian National Anthem ( State Anthem of the Russian Federation )
France - La Marseillaise - Chant de guerre pour l’armée du Rhin - French National Anthem
Czech Republic - Kde Domov Můj? - Czech National Anthem ( Where Is My Home? )
South Africa - Die Stem van Suid-Afrika - Nkosi Sikelel' iAfrika - South African National Anthem ( The Call of South Africa - Lord Bless Africa )
Germany - Das Lied der Deutschen - Deutschlandlied - German National Anthem ( The Song of the Germans )
Cuba - La Bayamesa - Himno de Bayamo - Cuban National Anthem ( The Bayamo Anthem )
Turkey - İstiklâl Marşı - Turkish National Anthem ( Independence March )
Slovenia - Zdravljica - Slovenian National Anthem ( A Toast )
Scotland - Scotland the Brave - Scottish National Anthem
Belgium - La Brabançonne - Belgian National Anthem
Uruguay - Himno Nacional - Orientales, la Patria o la Tumba - Uruguayan National Anthem
Sweden - Du Gamla, du Fria - Swedish National Anthem ( Thou Ancient, Thou Free )
Spain - Marcha Real - Marcha de Granaderos - Spanish National Anthem ( Royal March - March of the Grenadiers )
China - Yiyongjun Jinxingqu - Chinese National Anthem ( March of the Volunteers )
Denmark - Kong Christian Stod Ved Højen Mast - Royal National Anthem ( King Christian Stood By the Lofty Mast )